Does jQuery do any kind of caching of “selectors”?

Question

For example, will the first piece of code perform a full search twice, or is it smart enough to cache results if no DOM changes have occurred?

if ($(\"#navba         


        

Answer 1

I don't think it does (although I don't feel like reading through three and a half thousand lines of JavaScript at the moment to find out for sure).

However, what you're doing does not need multiple selectors - this should work:

$("#navbar .heading:not(:empty)").hide();